Across
1
Low-lying land surrounded by higher ground
3
Dry land with little rainfall
4
Wearing away of land by water or wind
7
Piece of land jutting into the sea
9
Chain or group of islands
10
City that is seat of government
Down
2
Distance east or west of prime meridian
5
Height above sea level
6
Vast body of salt water
7
One of seven major landmasses
8
Large slow-moving mass of ice
11
Body of water surrounded by land